Fluid-supply pump.



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STATES PATENT Trice.

HORACE L. ARNOLD, OF NEW YORK, N. Y.

FLUID-SUPPLY PUIVIP.

SPECFICATI-ON forming part of Letters Patent No. 666,842, dated January 29, 1901.

Original application led February 17, 1900, Serial No. 5,576. Divided and this application tiled July 5, 1900. Serial No.

22,543. (No model.)

To @ZZ whom t may foncer-7e.-

Be it known that l, HORACE L. ARNOLD, a citizen of the United States, residing in the city of New York,borough of Brooklymcounty of Kings, State of New York, have invented certain new and useful Improvements in Fluid-Supply Pumps, of which the following is a specification.

This invention relates to feed-pumps for supplying regulable charges of material, and is shown employed in connection with what are known as combustion engines, although it is not limited to such use.

Primarily the object of the invention is the provision of a pump the action of which may be regulated with precision, so that any desired quantity of material may be supplied thereby.

A further object of the invention is the provision of a feed-pump consisting of a cylinder and its plunger, one of said parts being adjustable with relation to the other to vary the amount of material delivered by the pump.

A further object of the invention is the provision of a feed-pump the reciprocatory plunger of which is driven by the cran k-shaft of an engine, a pump-cylinder having asuitable slot or port to permit the entrance of material, a stationary plug or piston mounted within said cylinder, and means for adjusting the cylinder over said plug, whereby a charge of fixed quantity regulable to the proportions desired may be delivered by the pump.

A further object of the invention is the provision of means for adjusting the pumpcylinder with reference to the stationary plug or piston.

A further object of the invention is the provision of a tubular plungerdriven by the crank-shaft of an engine and equipped with suitable valves and in connection with said plunger a slotted pump-cylinder and means for adjusting said cylinder so that the amount of material delivered through the plunger may be regulated as desired.

My invention is shown applied to the form of combustion motor illustrated and described in my application filed February 17, 1900, Serial No. 5,576, of which the present application is a division.

In the accompanying drawings, in which like numerals designate like parts throughout the several views, Figure 1 is a longitudinal vertical section of part of a combustion-motor of the type mentioned in my application aforesaid, showing my invention applied thereto and the piston at about the limit of its downward stroke. Fig. 2 is a view similar to Fig. l of the vaporizing and combustion devices of the motor, showing a fly-Wheel and an engine crank-shaft in elevation, the parts being represented with the piston at the limit of its upward stroke within the chargecompressor cylinder. Fig. 3 is a perspective view of the pumpecylinder, showing a portion of the tank in which the material to be delivered by the pump is contained in section. Fig. el. is a cross-section of the pump-cylinder, the tubular plunger, and the Well surrounding said cylinder, taken on linea@ 00, Fig. l, looking upward. Fig. 5 is a side elevation of the slotted well in which the pump-cylinder is located detached. Fig. 6 is aside elevation of the pump-cylinder detached.

My invention may be applied to any suitable motor, as above stated, and the iiy-Wheel of a motor to be employed in connection therewith is designated by the numeral 10 and the crank-shaft of the engine on which said flywheel is mounted by the numeral 12.

Connected to a part of the frame 13 of the motor or constituting an integral portion thereof is a charge-compressor cylinder 14, shown as provided on its exterior surface with a brazier or igniting device 15, in which a Wick of asbestos or other material 16 may be placed, said wick being charged with combustible material, so that upon the ignition thereof the llame generated will heat the charge-compressor cylinder to the desired degree. Any other form of charge-igniting device may, however, be substituted for the brazier and wick shown.

Sleeved on the crank 12 of shaft 12 is a pitman 17, havinga ball-bearing connection with the stem 18' of a cross-head 18, movable back and forth in ways, (not shown,) and attachedl in the exempliication of the invention shown to a tubular pump-plunger19, provided at one end Wit-h a piston 20, the head 20' of which is perforated at 202 for a purpose hereinafter de- ICO scribed. At its opposite end the tubular plunger 2() is provided with a perforated head 21, in a seat of which a ball-valve 22 is placed, said valve opening upward, and the plunger reciprocates in a pump-cylinder 23, provided with a series of slots 24, and fitted at its lower end over a stationary plug 25, located in the bottom of a chamber or well 28, secured to the tank 11. At the end opposite to said stationary plug lthe pump-cylinder is enlarged and exteriorly threaded at 2G and is provided with a gear 27 of any desired kind. The chamber or well 28 has a series of slots 29 for the admission of material from the tank, and at its upper end this well 28 is internally threaded at 28 to receive the externally-tnreaded portion 26 of the pump-cylinder 23, and is externally threaded at 282 to receive a flanged nut 283, by means of which it is secured to the tank.

As a convenient device for actuating the gear 27 I have provided a sector 30, the hub 30 of which is pivotally secured on a stud 31, projecting from the tank 11, a suitable handle 32 being attached to said sector for manipulating the same. Any suitable means may, however, be employed for actuating the geared segment.

By adjusting the cylinder 23 over the plug 25 in an upward direction a larger space or pocket is formed between the end of the plunger 19 and the top of the plug 25, and consequently more material will be delivered to the charge-compressor cylinder 14, and when this cylinder is lowereda smaller pocket is formed, and therefore a charge of less quantity will be delivered. It will be noticed that the slots 24 of cylinder 23 terminate some distance from the lower end of said cylinder, thereby leaving an unbroken cylindrical portion surrounding the plug and which when the cylinder is adjusted constitutes a pocket of the desired size between the end of the plug and the lower end of the plunger 19 when the latter is in its lowest position, all material except that retained in said pocket eseapingwlien displaced by the plunger through the slots 24. ln this way a xed charge of the desired quantity, Variable at will, may be added to the column in the tubularplunger, and as the column is augmented in the manner described it is obvious that a like charge will be delivered through the plunger into the cylinder 14 at each downward stroke of the piston.

At its upper end the tubular plunger 19 is provided with a seat 19 for the reception of a ball or other desired kind of valve 192, which opens upward, and surrounding the stem of the anged head 193 of the plunger is a diskshaped valve 194, which on the downward stroke of the plunger will permit the entrance of air through the ports or openings 202 of the head thereof into the cylinder, said valve on the upward stroke of the plunger to compress the charge being forced downward tightly to close the openings in the charge-compressor piston 20.

At its upper end the charge-compressor cylinder 14 may be in communication with any suitable means for completing the combustion of the charge and for con veying the pressure generated by such combustion through a suitable conduit t-o the cylinder of an engine. In the present case the means for accomplishing this purpose are the same as those set forth in the application above mentioned and will now be briefly described.

At its upper end the charge-compressor cylinder 14 is threaded at 14', and to this threaded portion a chamber 33 is secured, having au upper internally-threaded end 33', an intermediate perforated diaphragm 332,and a plug or piston 333, projecting downward from said diaphragm. Fitted over this plug'or piston is a valve 34, a hanged portion 34 of which normally rests upon the upper end of the charge-compressor cylinder, and this valve is chambered out where it fits over the piston 333, and the two combined constitute a dashpot for cushioning the stroke of the valve and absorbing the shock-thereof.

Threaded into the upper end of the combustion chamber and pressure receiving chamber 33 is a chamber 47, and within this chamber 47 is a loaded pressure-valve 48, having a face 48 normally resting upon aseat of the diaphragm 332, which valve obstructs the passage of gas under pressure from the chamber 33 to a motor-supply pipe 49 until the gas in said chamber 33 obtains sufficient tension to open the valve 48, whereby there is pressure established in the charge-com presser cylinder 14 sufficient to insure the combustion of a charge.

To economize construction, the pressurevalve 48 is formed with an extension constitilting a piston safety-valve 50, having ports 50', and said Valve may be loaded by any desired means-for instance, by a lever 51-to which a spring or weight (not shown) may be applied. Ports 50 of the valve 50 place it in communication between the gas under tension and the atmosphere when the valve is sufficiently opened, and it is to be understood that the ports will be so proportioned that valve 48 may open to establish communication between the chamber 47 and the motorsupply pipe 49 without release of the gas under pressure from chamber 47, but when the pressure increases beyond the desired limit an additional opening movement of the valve will take place, which will bring the safetyvalve 50 into action and permit the gasto escape through the ports thereof until the normal pressure for which the valve is set is reestablished. At its lower end valve 48 is provided with a perforated stem 482, which is received in a socket of the piston 333.

The chamber 47 has a cylinder 47 for receiving the stem of the safety-valve 50, and has at one side a passage 52,comm unicating IOO IIO

with the motor-supply pipe 49. This supplypipe 49 may be mounted Within a tube 60, having a dared end 6l, said tube being located at the top of the motor-frame, and through it currents of air will pass for the purpose of surrounding and cooling said pipe, and at its other end the pipe 4:9 will be placed .in communication with a port leading to the cylinder of the motor. (Not shown.)

If an excess of iiuid is being supplied, causing too great a speed of the motor, the feedpump is adjusted to deliver less fluidto the charge-compressor cylinder,and if not enough fluid is being fed to said cylinder an adjustment is made to cause more fluid to be delivered thereto, the only essential condition being that the pump-plunger shall not be heated to such a degree that vaporzation of the [iuid in the reservoir or tank and its immediate accessories will take place.

It will be seen that in the construction described a long slender column of the fiuid to be vaporized is supported within the feedpump plunger, and it is immaterial at what point in said column vaporization of the fluid begins before the fluid is augmented by an increment variable at will.

By locating the feed-pump in the fluid-receptacle the strokes of the plunger thereof agitate and mix the fluid to be vaporized, so that there is no tendency to deliver either the lighter or the heavier parts of said duid separately to the charge-compressor cylinder and com bustion-chamber.

After a charge delivered by the pump-plunger has been consumed the charge-compressor cylinder let is maintained at a temperature sufficient to cause the ignition of succeeding charges, and when the liquid fuel iirst placed in the brazier is exhausted ignition will contin ue to take place Without the necessity7 of any special device for this purpose, said brazier ignition being suitable for a motor-cycle or motor-bicycle, as it demands no attention after starting, and the driver or rider is left free for other duties.

Many details of the invention could be variously modified, and it is not limited to the vertical disposition of the parts shown and described, for they may be arranged horizontally orin any other desired manner. Neither is the invent-ion limited to the specific construction ofthe feed-pu mp or fluid-supply devices, for many modifications could be made therein Without departure therefrom.

Having thus described my invention, I claiml. A pump comprisinga pu nip-cylinder provided with a slot between the extremes of movement of the face of the pump-plunger; a tubular pump-plunger coperating therewith; means for adjusting one of said parts wil h relation to the other-,whereby the amount of material delivered by the pump may be regulated as desired; a valve in said plunger;

and a fixed plugentering one end of the pumpcylinder.

2. The combination, With a slotted fluid- Well, of a pump-cylinderhaving longitudinal slots in its sides communicating with said well; a tubular plunger; valves adjacent to the ends of said plunger; means for adjusting the pump-cylinder; and a plug projecting from the Well, and over which said cylinder may be adjusted.

3. The combination, with an internallythreaded duid-well, of a tubular pu nip-plunger; valves in said plunger; a slotted externally threaded pump cylinder carrying a gear; a stationary plug projecting from the Well and fitting the bore of said cylinder; a fluid-receptacle; and a gear pivoted to said receptacle and in engagement with the gear of the pump-cylinder.

4. The combination, with a pump-plunger,

of an open-ended cylinder provided with slots between the extremes of movement of the face of the pumpplunger; a fluid Well in Which the cylinder is adjustably mounted; means for adjusting the pump-cylinder with relation to said Well; and a stationary plug projecting from the Well and fitting the end of said cylinder.

5. The combination,With a Huid-receptacle, of a slotted Well having a closed bottom, said Well being internally threaded at its upper end; a stationary plug projecting from the bottom of said'well; a cylinder threaded to engage the Well and provided with slots between the extremes of movement of the face of the pump-plunger; a tubular pump-plunger cooperating with the cylinder and plug; and a valve in said plunger.

6. The combination,wi th a fluid-receptacle, of aslotted Well threaded at one end and having at its opposite end a stationary plug; a cylinder also threaded and inserted in the Well, said cylinder being provided With slots between the extremes of movement of the face of the pump-plunger; a coacting pumpplunger; valves in said plunger; and means for rotating and thereby adjusting the cylinder With respect to the Well to vary the amount of `liuid delivered by the pump.

'7. The combination, With a slotted pumpcylinder, of a coacting plunger having a longitudinal delivery-duct; a stationary solid plug fitting the lpwer end of said cylinder; a valve near one extremity of said duet; a valve near the other extremity of said duct; and a chamber for receiving the charge delivered by the pump.

8. The combination, With an internallythreaded Well, of a pump-cylinder in threaded adjustment with said well, said cylinder being provided with slots between the extremes of movement of the face of the pumpplunger; gears for adjusting one of said parts with reference to the other; a fluid-receptacle on which one of said gears is movably mountroo IIO

IZO

ed; and a tubular plunger cooperating with the pump-cylinder.

9. The combination,with a fluid-receptacle, of an internally-threaded well having a longitudinal opening; a plug in said Well; apumpcylinder; a valved pu mp-plunger cooperating with said pump-cylinder; a threaded connection foradjusting the pump-cylinder; a gear; and means for actuating said gear.

l0. The combination, With a Huid-Well, of an adjustable pump-cylinder in said Well and having slots communicating therewith; a chamber; a tubular connection leading from the pump cylinder to said chamber; and valves in said connection.

l1. The combination, with a duid-Well, of an adjustable pump-cylinder in said Well,said cylinderhavingslots communicating With the Well; a tubular plunger carrying a valve at each end; means for reciprocating said plunger; a pump-cylinder in which the plunger Works; and a station ary plug projecting within one end of said pump-cylinder.

12. The combination, with a fluid-supply rank, of a Well detachably connected to said tank, said Well having slots; a pump-cylinderin threaded engagement With the Well and carrying a gear; a sector journaled on a stud projecting from the fluid-supply tank and in engagement With said gear; means for actuating said sector; a stationary plug projecting Within the lower end of the pump-cylinder; atubularplunger; Valveslocatedin each end of said plunger; acrank-shaft; and means connecting said crank-shaft with the plunger.

Y HORACE L,Y ARNOLD,Y

Witnesses:

FRED. J. DOLE, WM. H. BLODGETT. 

